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stira [4]
3 years ago
7

What is the product PLEASE HELP

Mathematics
1 answer:
cluponka [151]3 years ago
7 0

Answer:

C

Step-by-step explanation:

Each term in the second factor is multiplied by each term in the first factor, that is

- 2x(- 4x - 3) - 9y²(- 4x - 3) ← distribute both parenthesis

= 8x² + 6x + 36xy² + 27y² → C

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True or False: A race car driver tested his car for time from 0 to 60 mph, and in 20 tests obtained an average of 4.85 seconds w
vredina [299]

Answer:

False

Step-by-step explanation:

given that a race car driver tested his car for time from 0 to 60 mph, and in 20 tests obtained an average of 4.85 seconds with a standard deviation of 1.47 seconds.

Sample size n = 20

since population standard deviation is not known, we can use t critical value for finding out the confidence interval

df=19

t critical = 2.045

Margin of error = 2.045*\frac{s}{\sqrt{n} } \\=2.045*\frac{1.47}{\sqrt{20} } \\=0.6722

conidence interval = Mean±Margin of error

= (4.85-0.6722, 4.85+0.6722)\\= (4.1778, 5.5222)

The given confidence interval is (4.52, 5.18)

Hence the statement is false.

5 0
4 years ago
How i can answer this question
Advocard [28]

Answer:

A. 2(x+y+1). lmk if you need any more awnsers

4 0
3 years ago
For the feasibility region shown below, find the maximum value of the function P=2x+3y.
timofeeve [1]
Corner points in this graph are: ( 0,0 ) ( 0,8 ) ( 5,6 ) and ( 8, 0 ).
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P ( 0,0 )= 0
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P ( 6 , 5 ) = 2 * 6 + 3 * 5 = 12 + 15 = 27
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The maximum value is:
P max ( 6 , 5 ) = 27
3 0
3 years ago
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3 years ago
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2/8.

You take two pizzas and divide them by 8.
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4 years ago
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